JP2008228638A - Direct seeding machine - Google Patents

Abstract

[PROBLEMS] To provide a direct sowing machine capable of maintaining the leveling performance of a field by a leveling rotor even when the vehicle speed and the hardness of the field change, and simultaneously sowing seeds discharged from a granular material discharging machine to an appropriate depth. To do.
SOLUTION: A direct seeding device 142 for seeding a traveling vehicle with seeds in a field, a leveling rotors 27a and 27b rotating in front of the direct sowing device 142 for leveling a field before direct seeding, and a rear wheel transmission shaft rotational speed. The direct seeding machine includes a leveling rotor transmission 72 that changes the rotational speed of the leveling rotors 27a and 27b in accordance with the vehicle speed detected by the 205. The speed of the leveling rotors 27a and 27b is linked to the vehicle speed, for example. In order to suppress the amount of rotation of the leveling rotors 27a and 27b so that a large amount of soil is not naturally covered at this time, the seeding depth in the field is not increased.
[Selection] Figure 1

Description

  The present invention relates to a direct sowing machine equipped with a ground work device provided with a powder body discharger such as a fertilizer application device, a seeding device or a chemical spraying device.

Conventionally, a plurality of granular material feeding parts are provided side by side on the rear side of the seat of the traveling vehicle body, and a tank for storing the granular material is provided above the granular material feeding part, and is sent out from the granular material feeding part. There is known a direct seeding machine equipped with a powder and particulate material discharger that sends powder particles by blowing air from a blower and continuously discharges the particles to a farm field. Moreover, this direct seeding machine is equipped with the direct seeding apparatus with a float, and the structure provided with the leveling rotor for leveling a field just before seeding by a direct seeding apparatus is known.
JP 2001-211704 A

  The rotational speed of the leveling rotor of the direct seeding machine described in Patent Document 1 is not related to the vehicle speed or is completely proportional to the vehicle speed, and no consideration is given to the fact that the leveling rotor affects the hardness of the field. Therefore, when sowing immediately after leveling with the leveling rotor, the hardness of the field changes depending on the rotation speed of the leveling rotor, and the depth of the granular material by the covering soil changes.

  Accordingly, an object of the present invention is to maintain the leveling performance of the field by the leveling rotor even when the vehicle speed or the hardness of the field changes, and at the same time, seeds discharged from the granular material discharger can be sown at an appropriate depth. It is to provide a direct seeding machine.

The above-described problems of the present invention can be solved by the following solution means.
That is, the invention described in claim 1 includes a direct seeding device (142) for seeding powder particles in a field and a leveling rotor (27a) that rotates to level the field before direct seeding in front of the direct seeding device (142). 27b), the leveling rotor (27a) is arranged so that the increase / decrease amount of the rotational speed of the leveling rotor (27a, 27b) is larger than the increase / decrease amount of the vehicle speed according to the vehicle speed of the traveling vehicle. 27b) is a direct seeding machine provided with a leveling rotor transmission (72) that changes the rotational speed.
The direct sowing apparatus (142) of the present invention is not limited to a seed sowing apparatus, but refers to a fertilizer application apparatus, a seeding apparatus, a chemical spraying apparatus, or the like.

  According to the first aspect of the present invention, the rotational speed of the leveling rotor (27a, 27b) is interlocked with the vehicle speed. For example, when the vehicle speed is low, a large amount of soil covering is naturally caused by the action of the soil covering plate (153) having a soil covering function. In order to prevent the soil from becoming too soft by suppressing the rotation speed of the leveling rotor (27a, 27b) so as not to be made, it is possible to prevent the seeding depth of the granular material on the field from becoming deep. Thus, there is an effect of making the amount of soil covered by the covering plate (153) appropriate.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a left side view of a riding type direct sowing machine with a fertilizer application device. In this riding type direct sowing machine, a direct sowing device 142 is lifted and lowered via a lifting link device 3 on the rear side of a traveling vehicle body 2. The main body portion of the fertilizer application device 5 is provided on the rear upper side of the traveling vehicle body 2.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed in the front part of the airframe. Front wheel final cases 13 and 13 are provided on the left and right sides of the front wheel, and the front wheels 10 and 10 are attached to a front wheel axle that protrudes outward from a front wheel support portion that can be turned of the front wheel final case 13. Further, the front end of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel rolling shaft 18a (see FIG. 3) provided horizontally at the front and rear of the rear end of the main frame 15 is used as a fulcrum. The rear wheel gear cases 18 and 18 are supported in a freely rolling manner, and the rear wheels 11 and 11 are attached to the rear wheel axle that protrudes outward from the rear wheel gear cases 18 and 18.

  The engine 20 as a prime mover is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 through the first belt transmission device 21 and the second belt transmission device 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a clutch case 25 provided at the rear portion of the traveling vehicle body 2, and is transmitted to the fertilizer application device 5 by the fertilizer transmission mechanism 28.

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A bonnet 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10, 10 is provided above the bonnet 32. The engine cover 30 and the bonnet 32 have horizontal floor steps 35 on the left and right sides of the lower end. The rear portion of the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip end of a swing arm 45 formed integrally with the upper link 40. The link 40 rotates up and down, and the direct seeding device 142 moves up and down while maintaining a substantially constant posture.

  A center float 55 and side floats 56 and 56 are provided below the direct seeding device 142. When the aircraft is advanced with these floats 55 and 56 in contact with the mud surface of the field, the floats 55 and 56 slide while leveling the mud surface, and seeds are sown by the direct sowing device 142,. . Each float 55, 56, 56 is pivotally attached so that the front end side moves up and down according to the unevenness of the field topsoil surface, and the vertical movement of the front part of the center float 55 is detected as a vertical movement detection mechanism 57 during direct sowing work. By switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result, the direct sowing apparatus 142 is raised and lowered, so that the seed sowing depth is always maintained constant.

  The fertilizer applicator 5 feeds the fertilizer (powder granule) stored in the fertilizer storage tank (powder granule storage tank) 60 by a fixed amount by a fertilizer feed part (powder granule feed part) 61, ... The fertilization hose (powder transfer hose) 62, ... leads to the fertilization guides 63 (see Fig. 5) attached to the left and right sides of the floats 55, 56, 56, ... for sowing provided in front of the fertilization guides 63, ... It discharges in the fertilizer groove formed in the side part vicinity of a sowing line by the groove-grower 64, .... Pressure air generated by a blower (not shown) driven by a motor (not shown) is blown into the fertilizer hose 62,... Via a long air chamber 69 in the left-right direction, and the fertilizer in the fertilizer hose 62,. Is forcibly transferred to the fertilizer outlet on the planting side.

FIG. 2 shows a main part rear view of the leveling rotor support structure of the direct seeding machine of FIG. 1, and FIG. 3 shows a main part plan view of the leveling rotor 27 and the floats 55 and 56.
The leveling rotor support structure includes a beam member 66 whose upper ends are rotatably supported by both side members of a rectangular support frame 65 (FIG. 1) including left and right support rods and both side members extending in the vertical direction. A support arm 67 fixed to both ends of the beam member 66 and a rotor support frame 68 rotatably attached to the support arm 67 are provided. A drive shaft 70 a of the leveling rotor 27 a is attached to the lower end of the rotor support frame 68.

  As shown in FIG. 3, the rotor 27 b in front of the center float 55 is arranged in front of the rotor 27 a in front of the side float 56 due to the arrangement position with the floats 55 and 56. Therefore, the power to the drive shaft 70a of the rotor 27a is transmitted via the leveling device transmission 72 (FIG. 1) in the gear case 18 of the rear wheel 11, and the drive shaft 70b of the rotor 27b is connected to both the rotors 27a and 27a. Power is transmitted from a pair of chains (not shown) in the pair of left and right chain cases 73 to which power is transmitted from the inner ends of the drive shafts 70a and 70a.

  A leveling belt conveyor operating motor 195 is provided in the leveling device transmission 72, and the rotational speeds of the leveling rotors 27a and 27a can be changed according to the vehicle speed. This will be described later with reference to FIG.

Since the drive shaft 70b of the rotor 27b is only supported via a pair of left and right chain cases 73, 73, a reinforcing member 74 that bridges the pair of left and right chain cases 73, 73 is provided to reinforce the chain cases 73, 73. Is provided.
The rotor 27b is suspended by a pair of link members 76 and 77 whose upper ends are supported by the beam member 66 via a spring 78.

  The pair of link members 76 and 77 includes a first link member 76 whose one end is fixedly supported by the beam member 66 and a second link member 77 whose one end is rotatably connected to the other end of the first link 76. Thus, the spring 78 is connected between the other end of the second link member 77 and a mounting piece 74a rotatably supported by the reinforcing member 74.

A bent piece 82 is fixed to the lower end portion of the rotor vertical position adjusting lever 81, and the bent piece 82 is rotatably supported by the support frame 65. When the lever 81 is rotated in the left-right direction of the vehicle, a bent piece is formed near the protruding portion 66a fixedly supported by the beam member 66 rotatably supported by both side members of the support frame 65. 82 pivots up and down. Since the bent piece 82 locks the lower portion of the protruding portion 66a, the protruding portion 66a rotates the lever 81 in the right direction of the fuselage (direction of arrow S in FIG. 2), and the beam member 66 is centered upward. Rotate as By the rotation of the projecting portion 66a, the end of the first link member 76 opposite to the connecting portion with the beam member 66 is also rotated upward about the beam member 66. By rotating the first link member 76 upward, the rotor 27b can be lifted upward via the second link member 77 and the spring 78. When the rotor 27b is moved upward, the rotor 27a is also simultaneously moved upward via the drive shaft 70b and the drive shaft 70a.
Since the rotor vertical position adjusting lever 81 is provided at substantially the center of the vehicle body 2, it is easy to balance left and right when the rotors 27a and 27b are moved up and down.

  In this embodiment, the rotors 27a and 27b at a standard position of the rotor vertical position adjusting lever 81 at a height of 40 mm from the farm scene can be raised by up to 15 mm from the standard position by turning in the direction of arrow S in FIG. It is set so that it can be lowered by up to 15 mm from the standard position by turning in the direction opposite to the arrow S direction.

  The direct sowing machine of the present embodiment is a direct sowing machine in a riding four-wheel drive mode, and the direct sowing apparatus 142 is usually attached to the rear portion of the tractor where the direct sowing apparatus 142 is installed as a work machine as shown in FIG. . The direct seeding device 142 is connected to the rear side of the main frame 15 via parallel links 40 and 41 that can be raised and lowered. The central portion of the direct seeding device 142 is connected to the vertical link 43 at the rear end of the parallel links 40 and 41 so as to be rotatable around a rolling shaft (not shown).

The direct sowing apparatus 142 has a feeding roll 144 for feeding seeds from an upper seed hopper-143, a feeding cylinder 146 for feeding and guiding seeds, and a seed driving for discharging seeds fed and guided from the feeding cylinder 146 downward. A rotor 147 and a discharge cylinder 148 are included. Under the direct sowing device 142, there are disposed floats 55 and 56 that are suspended below the sowing frame 150 and slide on the soil surface. Seeding cylinders 149 are provided on the left and right sides of each of the floats 55 and 56, and the lower ends of the release cylinders 148 and the delivery cylinders 146 are arranged on the upper side to flow the seeds and fertilizer released downward. Guide to the soil surface to be leveled at G. 55, 56.
On both sides of the floats 55 and 56, a pair of sowing grooves 64 and a pair of cover plates 153 for filling the grooves in the field made by the sowing grooves 64 are provided.

  FIG. 4 shows a cylindrical feeding roll 144 portion of the feeding portion of the direct seeding device 142. The feeding roller shaft 144b at the center of the feeding roller 144 is formed with a feeding hole 144a at a trisecting position, and a jumping arm 154 is provided as a jumping device at the bottom of each feeding hole 144a. Is provided so as to be pivotable around the spring 155 and is ejected by the spring 155 toward the feeding hole 144a. Further, a cam arm 156 is fitted and supported around the feeding roller shaft 144b, and the rotation area of the jumping arm 154 is brought into contact with the cam roller 156a at the tip of the arm 156. Thus, it can be operated to project from the bottom of the feeding hole 144a to the outer periphery. The base stopper 154 b of the jumping arm 154 is brought into contact with the inner peripheral surface of the feeding roll 144. Further, the cam roller 156a is positioned below the feeding roller shaft 144b, and the jumping direction A of the seed bouncing from the feeding hole 144a is an acute angle B downward with respect to the guide wall surface 146a of the feeding cylinder 146. Set as follows.

  The outer peripheral surface of the feeding roll 144 is scraped by a scraper brush 158 that scrapes and smoothes. The seed driving rotor 147 is provided at the lower part of the feeding cylinder 146, and a rotating peripheral surface is formed with a sawtooth-shaped protrusion 147a, and several seeds are fitted between the protrusions 147a. And can be discharged to the lower discharge cylinder 148 by rotation. The seed driving rotor 147 rotates around the seed driving rotor shaft 147b so that the protrusion 147a is within the rotation range at the lower end of the feeding cylinder 146. The feeding cylinder 146 is formed in a state tangential to the rotation of the protrusion 147a.

When the feeding roll 144 rotates, the seeds in the hopper-143 enter the feeding hole 144a retracted by the spring 155, and are scraped and averaged by the scraper brush 158 by the rotation of the feeding roll 144. It is fed to the side of the feeding cylinder 146 on the side. When this feeding hole 144a is located in the lower quadrant, the jumping arm 154 located at the bottom of the hole is acted on the jumping (cam) roller 156a and pushed outward against the spring 155, and this feeding The seed in the hole 144a is discharged in the direction of arrow A toward the lower guide wall surface 146a. The seeds thus fed out are engaged between the protrusions 147a of the seed driving rotor 147 and are released to the discharge cylinder 148 at a variable speed. At this time, the seeds that are intermittently fed are engaged and released between the few protrusions 147a without being scattered and are driven into the soil. For this reason, a predetermined number of seeds that are guided to the sowing cylinder 149 and released to the soil surface are seeded in a direct sowing state.
The rotation of the feeding roll 144 is controlled by a seed feeding motor 189 (FIGS. 5 and 8) controlled by the control device 170.

FIG. 5 shows a schematic plan view of the floats 55 and 56, and shows a mechanism diagram of a member for operating the cover plate 153 provided on the floats 55 and 56. FIG.
When the cover plate motor 191 (FIGS. 5 and 8), which is controlled by the control device 170, is turned on and off, the pair of arms 162 and 162 are swung through the wire 161, and the cover plate 153 at the tip of the arm is moved to an arrow. Swing in the B direction. The soil after sowing in the groove formed by the sowing groover 64 can be covered by swinging the soil covering plate 153 described below.

  That is, when the cover plate operating motor 191 is moved from cut to on, the bases of the pair of arms 162 and 162 are pulled through the wire 161, and via a torque spring (not shown) provided at the tip of each arm 162. The cover plate 153 connected at a predetermined angle swings. At this time, the hardness of the field is checked by the hardness sensor 151 (FIG. 5) attached to the side float 56 in contact with the field. A wire connected to the cover plate 153 by controlling the cover plate operation motor 191 based on the detection result of the soft / soft sensor 151 so that the inclination angle of the cover plate 153 can be changed in accordance with the hardness of the field by the soft / soft sensor 151. 161 is pushed and pulled. The harder the field is, the stronger the wire 161 is pulled to increase the degree of inclination of the earth covering plate 153.

  Moreover, since the inclination degree of the covering board 153 can be changed by the pulling degree of the wire 161, the inclination degree of the covering board 153 is strengthened at the beginning and the end of planting of seeds from the direct sowing device 142 using this mechanism. It can also be used as a reference when planting seeds.

  In addition, an object (such as colored paper or a water-soluble object made of organic matter) may be dropped at the position of the field where seeds are planted and planted without operating the cover plate 153. This is especially useful when planting seeds at the shore, as the remaining headland width is known. Producing a landmark object from degradable organic matter will not cause pollution.

Further, the softness of the field is detected by the hardness / softness sensor 151, and the detection result of the sensor 151 and the operation of the direct sowing device 142 are interlocked. If the field is hard, the seed placement motor 194 (FIGS. 5 and 8) If the field is soft, the output to the seed placement rotor 147 by the seed placement motor 194 is slowed down.
In this way, the seeding depth can be made uniform throughout regardless of the hardness of the field.

In addition, an air inlet (not shown) is provided in the feed cylinder 146 upstream of the seed implantation rotor 147, and when air is introduced from here and poured toward the seed implantation rotor 147, seed (soot) Eliminates the risk of clogging in the transport path.
Further, if a water tank (not shown) is attached to the seed hopper 143, mud attached to the sowing groover 64 can be washed away with water.

The feature of this embodiment is that the rotational speed of the leveling rotors 27a, 27b is linked to the vehicle speed. The rotational speeds of the rotors 27a and 27b are changed according to the vehicle speed measured by the rear wheel transmission shaft rotational speed sensor 205 (FIG. 8). That is, as shown in FIG. 6, the circumferential speed of the rotors 27a and 27b is made substantially the same as the vehicle speed up to a predetermined vehicle speed (for example, 0.5 m / s). Next, as the vehicle speed increases, the peripheral speed during rotation of the rotors 27a and 27b is further increased.
The rotational speeds of the rotors 27a and 27b are adjusted by a speed change belt conveyor operating motor 195 of the leveling rotor transmission 72 provided in the rear wheel gear case 18.

  The rotational speed of the leveling rotors 27a and 27b is linked to the vehicle speed. For example, when the vehicle speed is slow, the rotational speed of the leveling rotors 27a and 27b is suppressed so that a large amount of soil is not naturally covered by the action of the soil covering plate 153 having a soil covering function. In order to prevent the soil from becoming too soft, it is possible to prevent the seeding depth of the granular material in the field from becoming deep. Thus, there is an effect of making the amount of soil covered by the soil covering plate 153 appropriate.

Further, the direct sowing device 142 is attached to the airframe so that the plowing depth of the field scene by the leveling rotors 27a, 27b and the sowing depth are the same, and the sowing groover 64 for the height of the bottom surfaces of the floats 55, 56 is provided. The height and the height of the lower ends of the rotors 27a and 27b are made the same.
With the above configuration, the seeding depth is stabilized by making the boundary region between the surface layer of the farm field softened through the rotors 27a and 27b and the hard layer below it the same as the seeding depth. By making (leaving) a hard layer in this way, it is possible to prevent seed pods from being sowed deeper than that.

Further, in place of the rotors 27a and 27b, as shown in the rear view (FIG. 7 (a)) and the side view (FIG. 7 (b)) of the main part of FIG. Also good.
The plate body 75 is preferably a plate having a drainage function. Since the plate body (drainage plate) 75 can push the water accumulated on the field surface to the drainage port in the periphery of the field, it serves as auxiliary means for draining from the field.

  In addition, if the plate body 75 has a width that is full of the width of the vehicle, the drainage performance is excellent. However, when the plate body 75 is used in a state where there are seedlings in the field, the seedling planting condition is set. It is desirable not to arrange the plate body 75 in the width.

Further, in the direct seeding machine having the above-described configuration, the control device 170 according to the present embodiment performs direct seeding during turning based on the detected value of the rotational speed of the rear wheel 11 inside the turning (rear wheel transmission shaft rotational speed sensor 205). Swing interlocking control that automatically performs various operations can be performed. In particular, when the rear wheel 11 inside the turn is steered by a predetermined angle or more, the turn interlock control can be performed.
A control block diagram showing the input / output relationship of the control device 170 is shown in FIG.

The concept of this control is shown in FIG.

  That is, with the handle 34 turned off and the side clutch (not shown) of the rear wheel 11 inside the turn turned off, the left and right rear wheel transmission shaft rotation speeds are detected by the sensor 205, and the inner rear wheel 11 during the turn is detected. When the transmission shaft rotational speed exceeds the set value N1, the direct seeding device 142 is lowered. After that, after the transmission shaft rotational speed of the rear wheel 11 is the set value N2 and the operation of the direct seeding device 142 enters the “cutting” state (= the direct seeding device 142 moves to the up state), after the start of the cutting operation of the handle 34 This is a mechanism for setting sowing when the rotational speed n of the transmission shaft of the wheel 11 exceeds the total value.

FIG. 10 shows a flow of the turning interlock control.
First, the rotational speeds of the transmission shafts of the left and right rear wheels 11 and 11 are detected by the transmission shaft rotational speed sensor 205, and a reference value N1 (inner drive shaft (transmission shaft) rotation signal setting from turning start to turning 90 ° of the vehicle body) is set. Value), N2 (drive shaft rotation signal setting value from turning 90 ° to seeding clutch “on”), θ1 (lower limit value of steering wheel cut angle during straight operation), θ2 (handle during straight drive operation) Set the upper limit value).

  Next, setting dials 206a to 208b for adjusting the set values of the rotation speeds N1 and N2 and the handle cutting angles θ1 and θ2 in order to cope with differences in the field conditions such as the hardness and water depth of the field, the depth of the tillage, and the like. The correction value n0 is set according to FIG.

  When the direct sowing device 142 is in a seed planting state, it is detected in the state of the control device 170 accompanying the operation of the finger lever 171 (FIG. 8). The sensor 205 detects the rotational speed n of the transmission shaft of the rear wheel 11 from when the operation of the device 142 enters the “ON” state until the operation of the direct seeding device 142 becomes the “OFF” state, and the value (n) Remember. Next, the turning angle (steering angle) θ of the handle 34 is detected by a handle turning angle sensor (potentiometer) 193 (FIG. 8) provided on the shaft of the handle 34, and when the vehicle is not traveling straight (θ1 <θ <θ2), It is detected in which direction the vehicle is turning.

When the left turn is in progress, the rotational speed of the transmission shaft of the left rear wheel 11 is detected, and when the rotational speed n1 is n1 ≧ N1 + n0, the aircraft has turned 90 degrees or more from the start of the turn, so the direct seeding device 142 is lowered. . The headland is leveled as the direct sowing device 142 descends.
Subsequently, when the rotational speed of the transmission shaft of the left rear wheel 11 is detected by the sensor 205 and the rotational speed n2 becomes n2 ≧ N2 + n + n0, the direct seeding device 142 is operated to start direct seeding.
In the case of a right turn, the same control is performed as in the case of a left turn.

  In the turning control, the hydraulic sensitivity of the hydraulic cylinder 46 of the direct seeding device 142 is set to be insensitive (not switched to the upward side) between the “lowering” of the direct seeding device 142 and the “entering” of the direct seeding device 142. It is desirable that the float 55 and the like be in a front-up state. This can be done by setting the control target of the center float sensor 169 so that the center float 55 is in the forwardly raised state. By turning the center float 55 in the forwardly raised state, the turning trace can be leveled, Ground treatment can be performed easily and accurately.

  Since the rotational speed of the transmission shaft (drive shaft) of the rear wheel 11 in which the side clutch (not shown) is cut in this way is detected, slip or the like is detected as compared with the detection of the rotational speed of the rear wheel 11 to which power is transmitted. There are features that are difficult to be affected by. Further, since the rotational speed of the drive shaft that rotates faster than the rear wheel 11 is detected, the measurement accuracy can be easily increased. As a result, there is an effect that the direct sowing start for each planting line becomes substantially constant (the headland width (D) is constant).

Further, a start button (switch) 184 for turning control that performs various operations of the turning control shown in FIG. 10 may be used as a button for setting the start position for direct seeding.
In this way, forgetting to operate the button is prevented by combining the button for starting the seedling and setting the start position for sowing and the start button (switch) 184 for turning control for performing the series of turning control operations. it can.

  Further, when the direct seeding device 142 is connected instead of the seedling planting device attached to the work machine connection portion of the riding type rice transplanter having a turning control function, the work machine attaching / detaching hitch 145 in the work machine connection portion is connected to the seedling. A switch for determining whether the planting device is attached or whether the direct seeding device 142 is attached is provided. Then, when it is detected that the direct seeding device 142 is attached to the work implement attachment / detachment hitch 145, the control is performed in the mode of the turning control of the direct seeding device 142.

That is, when the direct seeding device 142 is attached to the work implement attaching / detaching hitch 145 as shown in FIGS. 11 (a) and 11 (b), when the turning (FIG. 11 (a)) is completed, the hatched area in FIG. 11 (c) The seeding start position is automatically executed at an early stage so that the non-planting section shown in FIG. 11 (b) is not possible (the direct sowing position is executed earlier than the seedling planting position).
In this way, when the direct sowing device 142 is used, even if a time lag occurs from when the vehicle starts to move until the sowing starts, it is possible to prevent a non-seeding section during turning.

  Further, when the direct seeding device 142 is connected instead of the seedling planting device attached to the work machine connecting portion of the riding type rice transplanter having a turning control function, the seed device is used by using the control device 170 as shown in FIG. By adjusting the operation of the feeding motor 189, the automatic seed planting position (direct sowing position) is delayed by one planting position to secure a space for frame water dropping.

  INDUSTRIAL APPLICABILITY The present invention has a high possibility of being used as a working machine including various kinds of fertilizer application, direct seeding, or drug spraying machine for spraying chemicals including rice transplanters.

It is a side view of the direct seeding machine of one Example of this invention. It is a principal part rear view of the support structure of the leveling rotor of the direct seeding machine of FIG. It is a top view of the leveling rotor and float part of the direct seeding machine of FIG. It is a partial cross section enlarged side view of the direct seeding apparatus part of the direct seeding machine of FIG. It is an action | operation linkage diagram of the covering board of the direct seeding machine of FIG. It is a figure which shows the relationship between the circumferential speed of the leveling rotor of FIG. 2, and the vehicle speed of a direct seeding machine. FIG. 7 is a rear view (FIG. 7A) and a side view (FIG. 7B) of a plate body arranged in the rotor installation portion instead of the leveling rotor of FIG. 2. It is a block circuit diagram of the control system of the direct seeding machine of FIG. It is a figure which shows the view of the turning interlocking control of the direct seeding machine shown in FIG. 10 is a flowchart of turning interlock control in FIG. 9. It is a figure explaining the seeding start timing after turning of the direct seeding machine of FIG. It is a figure explaining the difference of the seeding start timing in the direct seeding machine of FIG. 1, and the planting start timing in the shore at the time of mat planting by the rice transplanter.

Explanation of symbols

2 traveling vehicle body 3 lifting link device 5 fertilizer 10 front wheel 11 rear wheel 12 mission case 13 front wheel final case 15 main frame 18 rear wheel gear case 18a rear wheel rolling shaft 20 engine 21 first belt transmission device 23 second belt transmission device 25 clutch Case 27 (27a, 27b) Leveling rotor 28 Fertilizer transmission mechanism 30 Engine cover 31 Seat 32 Bonnet 34 Handle 35 Floor step 36 Rear step 40 Upper link 41 Lower link 42 Link base frame 43 Vertical link 45 Swing arm 46 Lifting hydraulic cylinder 55 Center Float 56 Side float 57 Vertical motion detection mechanism 60 Fertilizer storage tank 62 Fertilizer hose 61 Fertilizer feed part 63 Fertilizer guide 64 Grower for sowing 65 Support frame 66 Beam member 66a Protrusion 7 Support arm 68 Rotor support frame 69 Air chamber 70 (70a, 70b) Drive shaft 72 Leveling device transmission 73 Chain case 74 Reinforcement member 74a Mounting piece 75 Plate body 76 First link member 77 Second link member 78 Spring 81 Rotor upper and lower Position adjusting lever 82 Bending piece 142 Direct seeding device 143 Seed hopper 144 Feeding roll 144a Feeding hole 144b Feeding roll shaft
145 Working machine attaching / detaching hitch 146 Feeding cylinder 146a Guide wall 147 Seed placement rotor 147a Projection 147b Seed placement rotor shaft 148 Release cylinder 149 Seeding cylinder 150 Seeding frame 151 Hard / soft sensor 153 Covering plate 154 Jumping out 154a Feed shaft 154b Base stopper
155 Spring 156 Cam arm 156a Cam roller 158 Scraper brush 161 Wire 162 Arm 169 Center float sensor 170 Controller 171 Finger lever 184 Start button (switch)
189 Seed feeding motor 191 Covering plate operating motor 193 Steering angle sensor 194 Seed driving motor 195 Shifting bellcon operation motor 205 Rear wheel drive shaft rotational speed sensor 206 θ1, θ2 setting dial 208 N1, N2 setting dial

Claims (1)

Direct seeding with a traveling vehicle provided with a direct seeding device (142) for seeding powder in the field and a leveling rotor (27a, 27b) rotating in front of the direct seeding device (142) for leveling the field before direct seeding In the machine
A leveling rotor transmission that changes the rotational speed of the leveling rotor (27a, 27b) so that the amount of increase / decrease in the rotational speed of the leveling rotor (27a, 27b) is greater than the amount of increase / decrease in the vehicle speed according to the vehicle speed of the traveling vehicle. A direct seeder provided with (72).

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